| The Cerberus Corporation in Swiss developed the first smoke detector and formed a complete fire alarm system in 1940s, during the following fifty years, the fire alarm system has developed from a simple, isolated and small-scale to a complex, large-scale and intelligent system. Its function not only limits in alarm, but also intergrates firefighting, auxiliary of escape, etc. but also becomes more intelligent and more sensitive. As the core of the modern automatic fire alarm system, the research and development of fire alarm control unit makes a significant sense.In this paper, on the research of the national standard GB16806-2006 entitled automatic control system for fire protection, GB4717-1993 entitled General technical conditions for fire alarm control unit as well as user needs, the basic functions and software framework of fire alarm control unit are determined, the software system's database and communication protocols are designed, the programming thought and implementation flow of each core functional blocks are described, and the software programed with the embedded Linux by using MiniGUI and SQLite.In addition, through analyzing the source code of sqlite-3.3.6, the article puts forward a solution to the problem that the FLASH dies young caused by SQLite flushing the FLASH too often, and modifies the source code of SQLite to implement the solution. |
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